Teredorus Hancock, 1906

Deng, Wei-An, Lei, Chao-Liang & Zheng, Zhe-Min, 2014, Two new species of the genus Teredorus Hancock, 1906 (Orthoptera, Tetrigidae) from China, with a key to the species of the genus, ZooKeys 431, pp. 33-49 : 35

Taxon classification Animalia Orthoptera Tetrigidae

Teredorus Hancock, 1906

Teredorus Hancock 1906: 51; Hancock 1915: 109; Kirby 1910: 30; Bruner 1910: 118; Shishodia 1991: 70-71; Blackith 1992: 181; Liang and Zheng 1998: 130; Zheng 2005: 219; Zheng 2006: 21-22; Deng et al. 2007: 201-202; Zheng and Xu 2010: 14.

Type species.

Teredorus stenofrons Hancock, 1906, Southern America, by original designation.

Redescription.

Size small or medium. Colour varying from ashy to brown and dark brown. body smooth, interspersed with granules.

Head a little or not elevated above the pronotal surface; vertex very strongly narrowed toward the front drawing the eyes together and in front forming a triangular shape, median carinula distinct and not advanced in front of the eyes; face slightly oblique; frontal costa bifurcate just behind lateral ocelli, elevated and compressed between antennae, sinuate in front, moderately sulcate. Antennae filiform, located below the eyes. Eyes more or less globose or pear-shaped, a little or not elevated above the pronotal surface, drawing antero-medially to each other; lateral ocelli situated below middle of eyes.

Pronotum anteriorly truncate, dorsum smoothly granulate, somewhat flattened, but subcylindrical, all the carinae low, median carina depressed or indistinct forward in front shoulders, posteriorly moderately distinct; prozonal carinae obsolete; humeral angles obtuse; pronotal process extend beyond apex of hind femora; lateral lobes of pronotum turned downwards, posterior angles rounded, posterior margin of each lateral lobe with two concavities. Elytra elongate, ovate with acuminate apex. Wings extended beyond the pronotal apex. Fore femora elongate, a little broadened, very finely serrated; middle femora elongate, broadened, bicarinate, margins finely serrated; hind femora elongate, a little crassate, margins finely serrated; first and third segment of hind tarsi equal in length, first pulvilli a little smaller than the second and third, second and third pulvilli equal in length.

Differential diagnosis.

The morphology of Teredorus is quite homogeneous, and this genus can be easily distinguished from other genera of the subfamily Tetriginae by vertex very strongly narrowed toward the front drawing the eyes together and in front forming a triangular shape.

Key to the species of Teredorus Hancock